Home / 3,159.42-4,739.88-1,428.02

Finding the Fourth Proportional to 3,159.42, 4,739.88 and 1,428.02

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Solution

The fourth proportional to 3,159.42, 4,739.88 and 1,428.02 is: 2,142.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.42 : 4,739.88 = 1,428.02 : x
  2. Step 2: Convert to fraction form
    3,159.42/4,739.88 = 1,428.02/x
  3. Step 3: Cross multiply
    3,159.42x = 4,739.88 × 1,428.02
  4. Step 4: Simplify right side
    3,159.42x = 6,768,643.44
  5. Step 5: Solve for x
    x = 6,768,643.44/3,159.42
  6. Step 6: Final answer
    x = 2,142.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.